Improvement in self locking and releasing attachments for levers, crank-arms



O. 0. STORLE. Self-Locking and Releasing Attachment for Levers,Crank-Arms, 8m.

No. 220,552. Patented Oct. 14, 1879.

UNITED STATES PATENT OFFICE.

OLE O. STORLE, DF MILWAUKEE, WISCONSIN, ASSIGNOR OF TWO-THIRDS OF HISRIGHT TO'J. G. FLINT, JR, OF SAME PLACE.

IMPROVEMENT IN SELF LOCKING AND RELEASING ATTACHMENTS'FOR LEVERS,CRANK-ARMS, dc.

Specification forming part of Letters Patent No. 220,552, dated October14, 1879; application filed September 1, 1879.

leasing attachments for levers, cranks, 800.,

and consists in a device by which a lever is rendered self engaging andreleasing, as will hereinafter be more fully described.

In the drawings, Figure 1 represents a side view of my invention; Fig.2, an edge View; Fig. 3, a vertical section through the ratchetwheel anddetents of the pawls, and Fig. 4 a detail.

A represents the spurdisk commonly applied to the frames'of windlasses,and through the center of this a shaft is passed. Keyed to this shaft isan arm, (3, which works up against the face of the spur-disk, and whichcarries a couple of pawls, b b, having hooks at one end to engage withthe bent spring D, and at the other end detents c c, of rectangularform, for engagement with the cogs.

The operating-lever is slipped onto the shaft after the plate or arm 0has been put on, is fastened by a key or nut, and projects up betweenthe two detents, which lean toward each other. Now, by forcing the levereither way,

it will be made to strike the opposing pawl and raise it up fromengagement with the face of the disk or segment, to fallagain only whenpressure in that direction is removed from the lever. Pressure in an:opposite direction will raise the correspondin gly-opposin g pawl, whileboth pawls will be in engagement when the lever is at rest.

The shaft B may receive a rope or chain for raising or lowering heavybodies, orit may communicate power to apply a brake. If the lever isdesired for use in connection with a wagon-brake, instead of an entiredisk a segment only will be necessary.

It will be seen that any degree of tension may be obtained with mydevice, and adjusted merely by operating the lever.

I have shown a cogged disk in illustrating my invention but it willapply equally well to frictional gearing, and the detents in that casemay be made to bite or press upon a friction bar or disk to be releasedby the lever, as before stated.

My device will be useful in any position to which a self-locking leveris adapted, and especially on the hand-brakes of railroad-cars.

What I claim is 1. The locking and releasing device consisting of an armsecured upon a crank or other shaft, and upon the outer end of which arepivoted two spring-pawls for engagement with the face of a disk orsegment, in combination with a lever, which in its operation releasesthe pawl opposing it, as set forth.

2. The combination of the arm 0, pawls b b, spring D, and cog disk orsegment with a lever and a shaft for communicating power, as described.

In testimony that I claim the foregoing I have hereunto set my hand this21st day of August, 1879.

OLE O. STORLE.

Witnesses:

S. S. STOUT, EDWIN G. AsMUs.

